Manufacturing of fence-posts and railroad-ties.



UNITED ,STATES FATET OFFIOE.

HARVEY M. SHELLABARGER, OF VVAPELLO, IOWA.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed December 5, 1905. Serial No. 290,494.

To all whom, it may concern:

Be it known that I, HARVEY M. SHELLA- BARGER, a citizen of the UnitedStates, re# siding at Wapello, in the county'of Louisa and State ofIowa, have invented a new and useful Process in theManufacturing ofFence- Posts and Railroad-Ties, of which the following is aspecification.

This invention has for its object the production of a fence-post andrailroad-tie in which are combined all the advantages of a cement orstone post or tie and a Wooden post or tie; and it consists of a woodencore and an inclosing envelop of cement or other plastic material.

This invention further consists of certain novel features ofconstruction, all as hereinafter shown and described, and specificallypointed out in the claim.

In the drawings illustrative of the invention, Figure 1 is a perspectiveview of the post complete. Fig. 2 represents a plain wooden core for thepost. Fig. 3 represents a wooden'core for the post partly wrapped withtar-paper. Fig. 4 is a cross-section of the tie and mold-box in which itis molded, and Fig. 5 is a perspective view of the tie.

C represents holes punctured through the cement or plastic-materialcasing of the post to allow staples or nails to be driven into thewooden core of the post.

A represents staples for Jfastening the running-wire to the post Brepresents the nail for fastening the board or boards to the post.

D represents holes through the plastic material of the tie to enablespikes to be driven into the Wooden core of tie.

E represents the spike.

The post and tie comprise wooden cores,

Figs. 4 and 9, entirely wrapped with tar-paper inclosed in a cement orother plastic-material envelop, thus having the appearance of a stonepost or tie, nothing exposed in the finished post and tie, Figs. 1 and6, but the plastic material. The post or tie thus constructed possessesall the pressure-resisting and everlasting quality and power of a cementstone post or tie and all the transverse stiffness andbreakage-resisting power of the wooden post or tie. The pos't or tiewill also be very durable and moisture-1e' sisting. The post or tie maybe of any size or length. The main thing to be considered is that thecores be large enough to stand the strain which naturally comes on apost or tie.

My process of manufacturing said above post or tie is as follows: Ifirst prepare or construct a wooden mold of various sizes to accommodatethe size of the post or tie desired; second, I prepare a wooden core ofthe size desired for either post or tie and wrap said wooden cores withtar paper; third, I embed said wrapped wooden cores in concrete or otherplastic material; fourth, I puncture holes in said post or tie in orderthat staples, nails, or spikes may be driven into the wooden core ofsaid post or tie.

Having thus described my invention, what I claim is* The process offorming a composite body consisting in wrapping a Wooden core in tarredpaper and permanently embedding the Wrapped core in cement or otherplastic material.

HARVEY M. SHELLABARGER. `Vlitnesses: V

MAUD SHELLABARGER, Lun A. B. SHELLABARGER.

